This practice test has 25 important multiple choice questions from the Chapter - Anatomy Of Flowering Plants in Biology - Class 11th.
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Q.1.
Quiescent centre is present in the
- apical meristem
- shoot meristem
- lateral meristem
- root meristem
Answer:
(d) root meristem
Explanation: root meristem
Explanation: root meristem
Q.2.
Closed vascular bundles lacks
- pith
- xylem
- cambium
- xylem vessels
Answer:
(c) cambium
Explanation: cambium
Explanation: cambium
Q.3.
Which of the following is not a feature of spring wood?
- Color of the wood is light.
- Density is less.
- Cambium is active.
- Lesser number of xylary elements.
Answer:
(d) Lesser number of xylary elements.
Explanation: Spring season produces a wood which has large number of xylary elements having vessels with wider cavities.
Explanation: Spring season produces a wood which has large number of xylary elements having vessels with wider cavities.
Q.4.
In a monocot leaf
- bulliform cells are absent from the eqidermis
- veins from a network
- mesophyll is well differentiated into palisade and spongy parenchyma
- mesophyll is not differentiated into palisade and spongy parenchyma
Answer:
(d) mesophyll is not differentiated into palisade and spongy parenchyma
Explanation: mesophyll is not differentiated into palisade and spongy parenchyma
Explanation: mesophyll is not differentiated into palisade and spongy parenchyma
Q.5.
A.T.S. of a young dicot root can be distinguished from that of a young dicot stem by the presence of
- radial arrangement of xylem and phloem
- collateral arrangement of xylem and phloem
- interfascicular cambium
- intrafascicular cambium
Answer:
(a) radial arrangement of xylem and phloem
Explanation: adial arrangement of xylem and phloem
Explanation: adial arrangement of xylem and phloem
Q.6.
Fusifrom initial cells of cambium from
- vascular rays
- tracheary elements
- ray parenchyma
- phloem parenchyma
Answer:
(b) tracheary elements
Explanation: tracheary elements
Explanation: tracheary elements
Q.7.
Callose deposition is found in
- tracheids
- companion cells
- sieve areas
- phloem parenchyma
Answer:
(c) sieve areas
Explanation: sieve areas
Explanation: sieve areas
Q.8.
Stem develops from
- radicle
- cotyledon
- mesocarp
- plumule
Answer:
(d) plumule
Explanation: Stem develops from plumule.
Explanation: Stem develops from plumule.
Q.9.
Stem grows in girth due to
- outer cortical
- epidermis
- vascular cambium
- phellogen
Answer:
(c) vascular cambium
Explanation: Stem increase in girth due to the activity of vascular cambium. In this process, the outer cortical and epidermis layers gets broken. This layer is replaced with new protective cell layer
Explanation: Stem increase in girth due to the activity of vascular cambium. In this process, the outer cortical and epidermis layers gets broken. This layer is replaced with new protective cell layer
Q.10.
Which of the following is true about heartwood?
- They are dead but gives mechanical support to stem
- They are light in color
- They conduct water and minerals.
- 1 and 3
Answer:
(a) They are dead but gives mechanical support to stem
Explanation: Heartwood is dead and have non-conducting elements.
Explanation: Heartwood is dead and have non-conducting elements.
Q.11.
Pith is very well developed in
- monocot root and monocot stem
- monocot root and dicot root
- dicot root and monocot stem
- monocot root and dicot stem
Answer:
(d) monocot root and dicot stem
Explanation: monocot root and dicot stem
Explanation: monocot root and dicot stem
Q.12.
Which of the following helps in the curling of the leaf surface?
- Bulliform cells
- Xylem tissue
- Palisade parenchyma
- Bundle sheath cells
Answer:
(a) Bulliform cells
Explanation: In grasses, adaxial epidermal cells along the veins modify themselves into large, empty, colorless cells. These are called bulliform cells
Explanation: In grasses, adaxial epidermal cells along the veins modify themselves into large, empty, colorless cells. These are called bulliform cells
Q.13.
Walls of sclerenchyma are
- rigid
- lignified
- pectinised
- suberised
Answer:
(b) lignified
Explanation: lignified
Explanation: lignified
Q.14.
Fusifrom initial cells of cambium from
- vascular rays
- tracheary elements
- ray parenchyma
- phloem parenchyma
Answer:
(b) tracheary elements
Explanation: tracheary elements
Explanation: tracheary elements
Q.15.
Closed vascular bundles lacks
- pith
- xylem
- cambium
- xylem vessels
Answer:
(c) cambium
Explanation: cambium
Explanation: cambium
Q.16.
After the secondary growth, the oldest layer of secondary phloem in a dicot stem is located
- just outside the vascular cambium
- just inside the vascular cambium
- just inside the vascular phloem
- just outside the secondary xylem
Answer:
(c) just inside the vascular phloem
Explanation: just inside the vascular phloem
Explanation: just inside the vascular phloem
Q.17.
The innermost layer of cortex which shows casparian thickenings in its cells is called as
- epidermis
- endodermis
- pericycle
- exodermis
Answer:
(b) endodermis
Explanation: endodermis
Explanation: endodermis
Q.18.
Vessels differ from tracheids
- in being living
- in being derived from a single cell
- in that they consist of vertical row of cells with cross walls dissolved
- in coducting water and minerals
Answer:
(c) in that they consist of vertical row of cells with cross walls dissolved
Explanation: in that they consist of vertical row of cells with cross walls dissolved
Explanation: in that they consist of vertical row of cells with cross walls dissolved
Q.19.
Endodermis cells are rich in
- cellulose
- starch grains
- fibers
- resins and wax
Answer:
(b) starch grains
Explanation: Endodermis cells are rich in starch grains
Explanation: Endodermis cells are rich in starch grains
Q.20.
Formation of secondary xylem and phloem respectively
- Centrifugal and centripetal
- Centripetal and centrifugal
- Both centripetal
- Both centrifugal
Answer:
(b) Centripetal and centrifugal
Explanation: Centripetal and centrifugal
Explanation: Centripetal and centrifugal
Q.21.
Bark includes all the tissues
- Lying outside the vascular cambium
- Formed by vascular cambium
- Formed by phellogen
- Phellem & phelloderm
Answer:
(a) Lying outside the vascular cambium
Explanation: Lying outside the vascular cambium
Explanation: Lying outside the vascular cambium
Q.22.
Living tissue in lenticel is called
- Conjunctive tissue
- Connective tissue
- Complementary tissue
- Phelloderm
Answer:
(c) Complementary tissue
Explanation: Complementary tissue
Explanation: Complementary tissue
Q.23.
Which among the following are elongated or tube like cells with thick and lignified walls and tapering ends?
- Xylem fibres
- Xylem parenchyma
- vessels
- Tracheids
Answer:
(d) Tracheids
Explanation: Tracheids
Explanation: Tracheids
Q.24.
Which of the following provide maximum mechanical strength to a tree trunk.
- Heart wood
- Sap wood
- Cork
- Late wood
Answer:
(a) Heart wood
Explanation: Heart wood
Explanation: Heart wood
Q.25.
Vessels and companion cells are respectively present in the xylem and phloem of
- Gymnosperm
- Pteridophytes
- Angiosperm
- Bryophyta
Answer:
(c) Angiosperm
Explanation: Angiosperm
Explanation: Angiosperm
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